Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[header] How to do a flying lead change [title] Get your horse warmed up and ready to ride. [title] Place a single trot pole in the center of the ring or riding area, parallel to the long side. [title] Practice a lot of figure eights at the trot. <sep> (A) [step] If you are feeling stiff the first two will create less inertia and balance. Your horse might start to trick you but you'll need to ensure that your horse really has enough momentum to proceed at the trot. (B) [title] Practice keeping your horse moving at a normal pace. [title] Keep practicing with this normally tempo until you get it down to the half steps. (C) [title] Start trotting and jumping on the pole, as low as you can. [title] Land your front toe on the poles. (D) [step] Some horses are not always trained to do flying lead changes. To train the horse, start by doing figure eights; canter one circle, slow down in the center to a walk, then go the other direction at the canter.

D